Update onload.js to support new flags

[codeworksdev]

The standard onload.js template was updated to support the new LAZY_LOAD_PLUGINS (#151) and DEBUG_MODE (#177) flags.

EXAMPLE CODE

function mochi_init()
{
    this.setOption(
        {
            CLICK_NAME              : 'auto',
            DEBUG_MODE              : false,
            ENABLE_SERVICE_WORKER   : false,
            LAZY_LOAD_PLUGINS       : [],
            SW_UPDATE_NOTIFICATIONS : true,
            SW_VERBOSE_SYNCING      : true,
        }
        );
};